1. Sway Bars Suspension Steering For Sale
  2. sku: 14571096461290891
  3. BMW 33551127580

BMW 33551127580 Leveling Rear Sway Bar 728I 733I

fits model: E23, 735i, 745i. make: Bmw. year: 1978–1986.

33551127580 Bmw Used 1978-1986 E23 728i 733i 735i 745i Self Leveling System Rear Sway Bar

( Manufacturer Part Number: 33551127580 ), ( Mounting Style: Bolt-on ), ( Type: Sway Bar ), ( Color: Black ), ( Material: Alloy Steel ), ( Vintage Part: Yes ), ( Universal Fitment: No ), ( Country Of Origin: Germany ), ( Placement On Vehicle: Lower, Rear )

Review BMW Used Self Leveling System Rear Sway Bar fits E23 735I 745I 1978–1986

The **BMW E23 7 Series (1978 1986) Leveling Rear Sway Bar (Part Number: 33551127580)** is a precision-engineered suspension component designed to enhance the handling, stability, and ride quality of one of BMW s most iconic luxury sedans the legendary 728i, 733i, 735i, and 745i. This rear sway bar, integral to the E23 s sophisticated suspension setup, plays a critical role in managing body roll during cornering, ensuring a more composed and predictable driving experience while maintaining the car s signature blend of comfort and sportiness. Crafted from high-grade steel and meticulously machined to BMW s exacting standards, this sway bar is engineered to resist fatigue and deformation over time, even under the demanding loads imposed by the E23 s heavier weight and higher performance variants. Its unique design incorporates a leveling function, allowing for subtle adjustments to the rear suspension geometry, which helps compensate for varying load conditions whether carrying passengers, luggage, or simply adapting to uneven road surfaces. This feature not only improves ride comfort but also contributes to a more balanced weight distribution, reducing the tendency for the rear end to dip or squat under acceleration or braking. For enthusiasts seeking to restore or upgrade their E23 s suspension, this sway bar is a direct-fit replacement, ensuring compatibility with the original mounting points and bushings, while also providing a noticeable improvement in lateral stiffness and overall driving dynamics. Whether installed as part of a full suspension refresh or as a standalone upgrade, this component exemplifies BMW s engineering prowess of the era, delivering both performance and refinement with quiet efficiency.

### **Pros and Cons of Buying a 1978 1986 BMW E23 (728i, 733i, 735i, 745i) with a Leveling Rear Sway Bar**

#### **Pros**

1. **Classic BMW Driving Experience**

The E23 series is widely regarded as one of BMW s most refined and enjoyable pre-M5 era sedans. It offers a well-balanced chassis, precise steering, and a smooth ride, making it a joy to drive on both highways and winding roads. The manual transmission models (especially the 733i and 735i) provide a satisfying, engaging driving experience that modern sedans often lack.

2. **Strong Engine Options**

- The **M88 3.5L inline-6 (735i)** is a legendary engine, producing smooth power with excellent throttle response and longevity when maintained properly.

- The **M88 3.6L (745i)** is a rare and desirable variant with a slightly higher compression ratio, offering more power (180 hp) and a more aggressive character.

- The **M30 3.0L inline-6 (728i)** is a reliable, fuel-injected engine that, while less powerful, is still capable and easier to maintain than the older carbureted M30s.

- The **M117 3.0L turbo (733i)** is a unique and underrated option, offering turbocharged performance in a naturally aspirated era.

3. **Timeless Design and Prestige**

The E23 s elegant, timeless styling remains iconic. It carries the prestige of a BMW without the modern over-engineering, making it a statement car that appeals to enthusiasts and collectors alike. A well-maintained example can be a conversation starter and a status symbol.

4. **Modification Potential**

The E23 is highly modifiable, allowing owners to enhance performance, handling, and aesthetics. Common upgrades include:

- **Engine swaps** (e.g., M127 3.5L, S38 3.8L, or even modern turbocharged inline-6s).

- **Suspension upgrades** (coilovers, poly bushings, or full suspension rebuilds).

- **Exhaust and intake modifications** for better flow and sound.

- **Interior restyling** (leather, wood trim, or modern electronics).

The leveling rear sway bar (or sway bar disconnect) is a practical modification that improves handling and reduces body roll, making the car more stable at speed and in corners.

5. **Resale Value and Collectibility**

The E23, especially the **735i and 745i**, holds its value well due to its rarity and desirability. Well-documented, low-mileage examples can appreciate over time, making it a smart long-term investment for collectors.

6. **Reliability with Proper Maintenance**

While not as bulletproof as modern cars, the E23 s engines and transmissions can last **200,000 miles** with regular maintenance. The **M88 3.5L and 3.6L** are particularly durable if kept on synthetic oil and with proper valve adjustments. The **M30 3.0L** is also reliable if the fuel injection system is maintained.

7. **Comfort and Practicality**

The E23 offers a spacious, well-appointed interior with high-quality materials (especially in higher trims). The rear seats are roomy, and the trunk provides adequate cargo space for a sedan of its era. The **745i** and **735i** come with features like power windows, cruise control, and leather upholstery, making them more luxurious than their predecessors.

8. **Leveling Rear Sway Bar Benefits**

A leveling rear sway bar (or sway bar disconnect) improves the E23 s handling by:

- Reducing excessive body roll in corners.

- Enhancing stability at high speeds.

- Making the car feel more planted and responsive.

- Improving tire wear by preventing excessive lateral forces.

This is especially useful for daily driving or track use, as the stock rear sway bar is often too soft for modern driving standards.

---

#### **Cons**

1. **High Maintenance Costs**

The E23 is not a "set it and forget it" car. It requires **regular, meticulous maintenance**, including:

- **Valve adjustments** (every 30,000 50,000 miles for M30/M88 engines).

- **Fuel injection cleaning** (especially for M30 3.0L models).

- **Timing belt and water pump replacement** (critical for M88 engines).

- **Suspension components** (shocks, bushings, and ball joints wear out over time).

- **Electrical system upgrades** (modern wiring, alternators, and starter motors).

- **Exhaust system maintenance** (rust and leaks are common).

A well-maintained E23 can cost **$1,000 $3,000 per year** in upkeep, depending on the model and condition.

2. **Rust and Structural Issues**

Many E23s, especially those from the **late 1970s and early 1980s**, suffer from **rust in critical areas**:

- **Floor pans** (common in older models).

- **Subframe and rear quarter panels**.

- **Rockers and lower control arms**.

Rust can compromise structural integrity, leading to handling issues or even safety concerns. A thorough inspection is **mandatory** before purchase.

3. **Aging Electrical System**

The E23 s electrical system is **outdated by modern standards** and prone to failures:

- **Failing alternators** (common in high-mileage examples).

- **Worn wiring harnesses** (can cause intermittent issues).

- **Non-functioning or unreliable accessories** (e.g., power windows, locks, or climate control).

Upgrading to a **modern alternator, fuse block, and wiring loom** is often necessary.

4. **Transmission Reliability (Especially Automatics)**

- **Getrag GM4 (728i, 733i)** The manual transmission is **excellent** but can be finicky if not maintained.

- **ZF 5HP19 (735i, 745i)** The automatic is **more reliable** but still requires **fluid changes every 30,000 50,000 miles** and can develop **slippage or rough shifting** over time.

- **Clutch issues** in manual models (especially in high-mileage examples).

5. **Fuel Economy and Modern Driving Habits**

The E23 is **not fuel-efficient by today s standards**, especially the turbocharged **733i** and high-compression **745i**. Expect **12 16 MPG in the city** and **16 20 MPG on the highway**, which can be costly in today s gas prices. However, this is a minor concern for enthusiasts who prioritize driving experience over economy.

6. **Limited Modern Safety Features**

The E23 lacks **modern safety features** such as:

- **ABS (Anti-lock Brakes)** Only available on **1986 models** (optional on 735i/745i).

- **Airbags** Not standard until **1986 models** (optional in some markets).

- **Stability control or traction control** Nonexistent.

- **Modern braking systems** Drum brakes on the rear (until 1986) and smaller front rotors compared to today s standards.

While not a dealbreaker for enthusiasts, this is a consideration for daily drivers.

7. **Parts Availability and Cost**

- **Stock parts** (shocks, bushings, wiring harnesses) can be **expensive** due to age and rarity.

- **Aftermarket support is strong**, but some components (e.g., rare suspension parts) may require custom fabrication.

- **Engine swaps** (e.g., M127, S38) can be costly but are a popular way to modernize the car.

8. **Driving in Modern Traffic**

- The E23 s **manual transmissions** (especially the **Getrag GM4**) can be **slow and clunky** in stop-and-go traffic.

- The **automatic (ZF 5HP19)** is smoother but still not as refined as modern automatics.

- **Parking and maneuverability** can be challenging due to its size and lack of power steering assist (though the **735i/745i** has power steering).

9. **Insurance Costs**

The E23 is **not cheap to insure**, especially for high-performance models like the **735i or 745i**. Rates can be **2 3 times higher** than a modern sedan due to its value, age, and potential repair costs.

10. **Not a Daily Driver for Everyone**

While many enthusiasts love the E23 as a **weekend or track car**, it

Details:

Electronic parts were known to be good prior storage or are NIB/NOS. Model: 728I, 732i, 733I, 735I, 745I. Used BMW rear sway bar for vehicles with the self leveling system E23 7-Series. BMW E23 7-Series Self Leveling System Sway Bar.

It has been cleaned and checked for any physical imperfections.

part #: 33551127580 price

  • $148.00

specifications swabasus:

  • for models: E23, 735i, 745i
  • for makes: Bmw
  • for years: 1978-1986
  • mpn: 33551127580
  • mounting style: Bolt-on
  • type: Sway Bar
  • color: Black
  • material: Alloy Steel
  • vintage part: Yes
  • universal fitment: No
  • country of origin: Germany
  • placement on vehicle: Lower, Rear

returns swabasus:

  • time: 14 Days
  • policy: Returns Accepted
  • paid by: Buyer

payments swabasus:

  • credit card: Diners-club
  • wallet: Apple-pay
  • other

seller swabasus:

  • rating: 99.4%
  • city: Cincinnati, Ohio
  • # reviews: 936

shipping swabasus:

  • cost: $50.00
  • class: Standard
  • service: Standard
  • transit: 3-9 Days
  • type: Fixed

offer swabasus:

  • best offers: True
  • quantity: 1
  • started: February 9, 2026
  • options: Ship-to-home
  • sold: 0
  • availability: In Stock

general swabasus:

  • Car Truck Parts Accessories > Steering Suspension > Sway Bars, Links Bushings
  • condition: Used
for models: e23, 735i, 745i, for makes: bmw, for years: 1978-1986, mounting style: bolt-on, type: sway bar, vintage part: yes, universal fitment: no, country of origin: germany, placement on vehicle: lower, rear,
category: auto parts > car truck parts accessories > steering suspension > sway bars, links bushings, color: black, material: alloy steel, sku: 14571096461290891,
Bmw 33551127580 Is Similar To:
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5 offers $148.00–$148.00 USD
  • New. Offer #1 priced at $148.00 + $0.00 shipping estimate = $148.00* total. FREE SHIPPING
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